How do you tell if your gf is mad at you?

She stops being the first to get in touch.

Her responses are terse.

She responds late, if at all.

She participates less.

She stops being affectionate.

She becomes careless towards you.

She makes it complex and lets it all out.

Explanation:

Me thinking what did they do

her responses are terse , she stops getting in touch, she responds late, she participates less

pitch- the definition of pitch is as follows:

"the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone."